Parallel shoe guide



Dec. 3, 1940. Q BRQWN 2,224,096

PARALLEL SHOE GUIDE Filed April 26. 1940 IN V E NTOR.

I CAEL 0 BROWN. I 5 {2 8) 66M e i A TT(')RNEY.

Patented Dec. 3, 1940 PATENT OFFICE PARALLEL snoi: GUIDE Carl D. Brown, Hopedale, Mass., assignor to Draper Corporation, Hopedale, Mass., a corporation of Maine Application April 26, 1940, Serial No. 331,843

6 Claims.

The present invention pertains to the shuttle picking mechanism of fly shuttle looms and. has more particular reference to the devices for supporting and guiding the picker stick of such mechanism.

Looms of the type to which my invention pertains commonly include a parallel, so-called, a curved shoe rocking on the parallel, a picker stick fixed to and rocking with the shoe, means engaging the picker stick for imparting operative movement thereto, thrust means carried by the parallel for receiving the'inward thrust of the lower end of the picker stick and a guide tongue projecting upwardly from the parallel into a slot in theshoe to guide the shoe in its rocking movement. Inthe usual prior construction the guide tonuge. is integral with the parallel and the piece is made as a single casting. Accordingly when the guide tongue'became excessively worn or broken the entire parallel had.

to be replaced.

One object of the present invention is to pro- I vide in a loom, a parallel with a guide tongue detachably secured thereto, so that upon excessive wear or breakage of the guide tongue it may be readily removed and replaced by a new guide tonuge without removal or replacement of the parallel.

A further object of the invention is the provision of a guide tongue which may readily be installed on a parallel which has an excessively worn or broken guide tongue.

The foregoing and other objects of the invention are accomplished in the construction illustrated on the accompanying drawing:

Figure 1 is a front elevation, partly in section, of mechanism comprising the preferred embodiment of the invention;

Figure 2 is a plan View of a part of the mechanism of Figure 1, to a larger scale; and

Figure 3 is a detail view in perspective of certain mechanism shown on Figs. 1 and "2.

The mechanism shown on the drawing is applied to a fiy shuttle loom which is generally of conventional construction and the drawing accordingly shows only a part of a loom side I and such part of the shuttle picking mechanism as is necessary to an understanding of the present invention. It' will be understood that the loom side i is at the left hand side ofthe loom I The shuttle picking mechanism shown in chides a support 2, commonly known in the art 1 as a parallel, which is fixed to the lay rocker shaft'3 and which extends outwardly of the 100m from the loom side I. The parallel has an upper surface 4, preferably flat, on which a curved shoe 5 rests. The shoe 5 rocks on the parallel and is guided in its movements by a guide tongue 6 which projects upwardly from the parallel into a slot 7 in the shoe. The parallel is provided with an opening 8 beneath the shoe 5.

A picker stick 9 is fixed to the shoe 5 to rock therewith. To this end the picker stick may extend through the shoe and be secured thereto by a bolt Ill which passes through the shoe, picker stick and the end of a strap ll. The lower end of the picker stick projects downwardly through the opening 8 and the strap ll extends around the lower end of the picker stick and to a spring actuated drum l2. The upper end of the picker stick. is moved inwardly of the loom,which is toward the right of Fig. 1, by a conventional lu strap, not shown, and the drum IZ 'and strap H return the upper end of the picker stick outwardly or toward the left on Fig. 1.

A wear tongue i3 is fixed on the inner edge of the lower end of the picker stick, as by a set screw I4, and a plug I5 is fixed in the parallel 2 at the inner end of the opening 8. The plug it bears against the wear tongue I3 and receives the thrust of the lower end of the picker stick. The particular guide tongue 6 shown on the drawing consists of an inverted U-shaped bolt ofcircular cross section, with a long leg 16 and a short leg H. The short leg I1 is provided with an integral extension 18 of smaller diameter than the diameter of the leg, thus providing a shoulder I9. The extension [8 is threaded to receive a nut 2i].

The parallel 2 is provided with two spaced circular holes 2! and 22 in alignment with the center line of the parallel. Hole 2| is of slightly larger diameter than the diameter of long leg 56 of the guide tongue 6 and hole 22 is of slightly larger diameter than the threaded extension Iii of the short leg I! of the guide tongue 6.

When the guide tongue 6 is assembled on the parallel 2, the long leg l6 fits in hole 2| and the short leg I! fits in hole 22, the shoulder It on short leg ll abutting the top 4 of parallel 2. The integral extension projects through the hole 122 and nut 20 is secured thereon.

From the foregoing it is seen that the guide tongue is readily assembled and disassembled from the parallel. It is conventional in this art to cast the parallel and guide tongue as an integral piece. In such constructions when the guide tongue became excessively worn or broken the entire parallel had to be replaced. This invention renders such replacement unnecessary. When the guide tongue cast integral with the parallel is excessively worn or broken necessitating removal, the parallel is removed, the old guide tongueis filed off, holes 21 and 22 are drilled in the parallel and a guide tongue such as herein disclosed is bolted onto the parallel.

Having fully disclosed the preferred embodiment of my invention, I claim:

1. In a loom, the combination with a shoe having an opening therein of a parallel on which said shoe rocks, said parallel having ,a guide tongue engaging in said opening whereby said shoe and said parallel are kept in alignment during the rocking movement of said shoe, means detachably securing said guide tongue to said parallel, said means comprising a threaded extension on said guide tongue projecting into said parallel, and means horizontally spaced from said securing means for preventing relative movement between said tongue and said parallel.

2. In a loom, the combination with a shoe having an opening therein, of a parallel on which said shoe rocks, said parallel having a guide tongue detachably secured thereto and engaging in said opening whereby said shoe and said parallel are kept in alignment during the rocking movement of said shoe, said guide tongue comprising .an inverted U-shaped bolt.

3. In a loom, the combination with a shoe having an opening therein, of a parallel on which said shoe rocks, said parallel comprising a plate having a pair of openings therein, a guide tongue comprising .a member extending into one opening in said plate and having an extension projecting through the other opening insaid plate and means securing said extension to said plate, whereby "said guide tongue is rigidly and detachably secured to said parallel, said guide tongue extending into said opening in said shoe keeping said shoe and said parallel in alignment during the rocking movement of said shoe.

4. In a loom, the combination of a parallel having .an opening therein, a curved shoe rocking on said parallel and having an opening therein, a picker stick fixed to said shoe, the

guide tongue comprising .an inverted U-shaped member having an extension on one of its ends and means detachably securing said extension to said parallel.

5. In a loom, the combination with a shoe having an opening therein, of a parallel on which said shoe rocks, said parallel comprising a plate having a pair of openings therein and a guide tongue mounted on said plate and extending into said opening in said shoe whereby said shoe and said parallel are kept. in alignment during the rocking movement of said shoe, said guide tongue comprising an inverted U-shaped member having a threaded extension on one end projecting through one of said openings in saidplate and the other end of said member extending into the other opening in said plate and means detachably and rigidly securing said member to said plate.

6. In a loom, the combination with a parallel having a pair of openings adjacent one end; of a guide tongue, said guide tongue comprising an inverted U-shaped bolt, the legs of said bolt being received in said openings and means for detachably securing said bolt to said parallel.

' CARLD. BROWN. 

